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IgorLugansk [536]
3 years ago
11

I’m being timed help!!!!!!!!!!!!!!

Mathematics
2 answers:
Hunter-Best [27]3 years ago
8 0

Answer:

3x - y = -2

Step-by-step explanation:

Evgen [1.6K]3 years ago
7 0

Answer: light blue

Step-by-step explanation: Ax + By = C

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PLEASE HELP ASAP! A mountain climber is at an altitude of 2.9 mi above the earth’s surface.
shutvik [7]
You can use Pythagorean theorm to solve.

a^2 + b^2 = c^2
C = 3959 + 2.9 = 3961.9

x = ???? = a
b = 3959
Plugin our data.
a^2 + b^2 = c^2
a^2 + 3959^2 = 3961.9^2
a^2 + 15673681 = 15696651.61
a^2 = 22970.61
\sqrt{a^2} = sqrt{22970.61}
a = 151.560
x = 151.560
x = 151.6

7 0
3 years ago
The function F(x) = 2x/x+3 is an example of a rational function.<br><br><br> True<br> False
PSYCHO15rus [73]

It is true because a rational function is defined as those functions where the variable is placed in the denominator, which must be restricted, because all denominators cannot be equal to zero, other wise it would be undetermined

4 0
3 years ago
If q(x)=7x^2-1 find q(-9)
liq [111]

For this, we are just going to plug in -9 for every x and then solve the equation:


q(x)=7x^{2} -1


q(-9)=7(-9)^{2} -1


q(-9)=7(81)-1


q(-9)=566


Now we know that q(-9) is equal to 566.

3 0
3 years ago
Find the number of ways to listen to four CDs from a selection of 8 CDs. A) 1680 B) 336 C) 70 D) 50 pls aslo explain why..
777dan777 [17]

Answer:

a) 1680

<em>The number of ways to listen to four CDs from a selection of 8 CDs = 1680</em>

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given data the number of CD' s n = 8

<em>We have to selected '4' CD' s  from total '8' CD's</em>

<em>By using permutations </em>

<em>The number of ways to listen to four CDs from a selection of 8 CDs.</em>

<em>                          =     </em>8_{P_{4} }<em> </em>

<em>  we know that </em>

           n_{P_{r} } = \frac{n!}{(n-r)!}

          8_{P_{4} } = \frac{8!}{(8-4)!} = \frac{8 X 7 X 6 x 5 X 4!}{4!} = 1680

<em>The number of ways to listen to four CDs from a selection of 8 CDs = 1680</em>

7 0
3 years ago
Select the correct answer.
Step2247 [10]
A. 1,690 miles because it’s for 30 days and they do 12 miles each day
3 0
3 years ago
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